<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>底部导航栏</title>
    <link rel="stylesheet" href="style.css">
    <!-- 引入图标库 -->
    <link rel="stylesheet" href="https://unpkg.com/boxicons@2.0.7/css/boxicons.min.css">
</head>
<body>

    <ul class="nav">
        <span class="nav-indicator"></span>
        <li>
            <a href="#">
                <i class="bx bx-home"></i>
                <span class="title">首页</span>
            </a>
        </li>
        <li>
            <a href="#">
                <i class="bx bx-receipt"></i>
                <span class="title">数据</span>
            </a>
        </li>
        <li>
            <a href="#">
                <i class="bx bx-circle"></i>
                <span class="title">发布</span>
            </a>
        </li>
        <li>
            <a href="#">
                <i class="bx bx-bell"></i>
                <span class="title">消息</span>
            </a>
        </li>
        <li>
            <a href="#">
                <i class="bx bx-user"></i>
                <span class="title">个人中心</span>
            </a>
        </li>
    </ul>

    <svg xmlns="http://www.w3.org/2000/svg" version="1.1" id="filter-svg">
        <defs>
            <filter id="goo">
                <feGaussianBlur in="SourceGraphic" stdDeviation="10" result="blur" />
                <feColorMatrix in="blur" mode="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 18 -7" result="goo" />
                <feBlend in="SourceGraphic" in2="goo" />
            </filter>
        </defs>
    </svg>

    <!-- 引入js -->
    <script src="app.js"></script>
</body>
</html>